This is a one percent rise in Warren County’s population, from 109,595 in 2020 to 110,731 in 2021.
Warren County had the 19th largest population in New Jersey in 2021.
The US Census Bureau found more than 73 percent of counties in the US saw a natural decrease in population in 2021. This is up from a 55.5 percent increase in 2020.
The Midwest suffered the most sustained population decreases, with many counties along the US East Coast and through the Rocky Mountains seeing increases.
The US population continues to grow, though at a slower rate than before.
New Jersey Counties By Population Change from 2020 to 2021
| County | 2020 Estimated Population | 2021 Estimated Population | % Change in Population From Year to Year |
|---|---|---|---|
| Ocean County | 638,824 | 648,998 | 1.6% |
| Warren County | 109,595 | 110,731 | 1% |
| Sussex County | 144,082 | 145,543 | 1% |
| Hunterdon County | 128,839 | 129,924 | 0.8% |
| Gloucester County | 302,607 | 304,477 | 0.6% |
| Cape May County | 95,077 | 95,661 | 0.6% |
| Burlington County | 461,862 | 464,269 | 0.5% |
| Morris County | 509,001 | 510,981 | 0.4% |
| Monmouth County | 643,163 | 645,354 | 0.3% |
| Salem County | 64,859 | 65,046 | 0.3% |
| Atlantic County | 274,191 | 274,966 | 0.3% |
| Somerset County | 345,014 | 345,647 | 0.2% |
| Camden County | 523,204 | 523,771 | 0.1% |
| Bergen County | 954,774 | 953,819 | -0.1% |
| Middlesex County | 861,908 | 860,807 | -0.1% |
| Cumberland County | 153,848 | 153,627 | -0.1% |
| Mercer County | 386,759 | 385,898 | -0.2% |
| Union County | 574,349 | 572,114 | -0.4% |
| Essex County | 862,032 | 854,917 | -0.8% |
| Passaic County | 523,100 | 518,117 | -1% |
| Hudson County | 722,655 | 702,463 | -2.8% |
ORGANIZATIONS IN THIS STORY
Lopatcong• Broadway• Buttzville• Town of Belvidere• Port Murray• Hardwick• Port Colden• Johnsonburg• Stewartsville• Delaware Park• Allamuchy Township• Independence• Harmony Township• Hutchinson• Oxford• Knowlton• Beattystown• Brainards• Upper Stewartsville• Mountain Lake• Allamuchy• Mount Hermon• Town of Phillipsburg• Blairstown Township• Blairstown• Brookfield• Upper Pohatcong• Hainesburg• White• Great Meadows• Asbury• New Village• Town of Hackettstown• Marksboro• Columbia• Lopatcong Overlook• Bridgeville• Brass Castle• Vienna• Liberty• Harmony• Anderson• Hope• Finesville• Borough Of Alpha• Panther Valley
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